US3663726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating grease
Assignee: Citgo Petroleum Corp
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Filing: 1969-11-28
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Granted: 1972-05-16
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Expires: 1989-11-28
Abstract
Abstract A LUBRICATING GREASE HAVING A CONSISTENCY OF ABOUT 220 TO ABOUT 430 PENETRATION NUMBER WHEN MEASURED BY THE METHOD OF ASTM D-217 AND A DENSITY OF SUBSTANTIALLY LESS THAN WATER. THE LUBRICATING GREASE COMPRISES AT LEAST ONE GREASE THICKENER AND A LUBRICATING FRACTION INCLUDING AT LEAST ONE LUBRICATING FLUID AND AT LEAST ONE LINEAR POLYMER WHICH IS SOLUBLE IN THE LUBRICATING FLUID. A METHOD IS PROVIDED FOR CONTROLLING THE CONSISTENCY OF THE LUBRICATING GREASE AND THE VISCOSITY OF THE LUBRICATING FRACTION INDEPENDENT OF DENSITY, BY CONTROLLING THE AMOUNT OF THE POLYMER IN THE GREASE COMPOSITION.
Inventors
- 👤 Roy L Waring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:13
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/10; C10M2201/105; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/04; C10M2205/14; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/16; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2050/00; C10N2050/10
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |